FR852426A - Further development of incandescent electric lamps - Google Patents

Further development of incandescent electric lamps

Info

Publication number
FR852426A
FR852426A FR852426DA FR852426A FR 852426 A FR852426 A FR 852426A FR 852426D A FR852426D A FR 852426DA FR 852426 A FR852426 A FR 852426A
Authority
FR
France
Prior art keywords
further development
electric lamps
incandescent electric
incandescent
lamps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR852426A publication Critical patent/FR852426A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/34—Double wall vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
FR852426D 1938-04-02 1939-03-31 Further development of incandescent electric lamps Expired FR852426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL852426X 1938-04-02

Publications (1)

Publication Number Publication Date
FR852426A true FR852426A (en) 1940-02-01

Family

ID=19847149

Family Applications (1)

Application Number Title Priority Date Filing Date
FR852426D Expired FR852426A (en) 1938-04-02 1939-03-31 Further development of incandescent electric lamps

Country Status (3)

Country Link
DE (1) DE691377C (en)
FR (1) FR852426A (en)
NL (1) NL50256C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104594A2 (en) * 1982-09-23 1984-04-04 GTE Products Corporation Double-enveloped lamp
EP0104595A2 (en) * 1982-09-23 1984-04-04 GTE Products Corporation Double-enveloped incandescent lamp
US4625140A (en) * 1982-09-23 1986-11-25 Gte Products Corporation Tungsten halogen lamp with light source capsule containment device
EP1632984A2 (en) * 2004-09-07 2006-03-08 Osram-Sylvania Inc. Protected metal halide lamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104594A2 (en) * 1982-09-23 1984-04-04 GTE Products Corporation Double-enveloped lamp
EP0104595A2 (en) * 1982-09-23 1984-04-04 GTE Products Corporation Double-enveloped incandescent lamp
EP0104595A3 (en) * 1982-09-23 1984-11-07 Gte Products Corporation Tungsten halogen lamp with light-source capsule containment device
US4625140A (en) * 1982-09-23 1986-11-25 Gte Products Corporation Tungsten halogen lamp with light source capsule containment device
EP0104594B1 (en) * 1982-09-23 1989-01-25 GTE Products Corporation Double-enveloped lamp
EP1632984A2 (en) * 2004-09-07 2006-03-08 Osram-Sylvania Inc. Protected metal halide lamp
EP1632984A3 (en) * 2004-09-07 2007-09-05 Osram-Sylvania Inc. Protected metal halide lamp

Also Published As

Publication number Publication date
DE691377C (en) 1940-05-24
NL50256C (en)

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